Influence of spectral and textural characteristics and acidity of MFI zeolite on activity of catalysts for dimethyl ether conversion to hydrocarbons

Comparative data obtained by studying the synthesis of С 5+ hydrocarbons from dimethyl ether (DME) on catalysts using MFI zeolites available from different manufacturers are presented. It has been shown that MFI zeolite samples substantially differ in their acidic properties and structural, morpholo...

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Bibliographic Details
Published in:Petroleum chemistry 2016-09, Vol.56 (9), p.812-818
Main Authors: Kolesnichenko, N. V., Bukina, Z. M., Kitaev, L. E., Kurumov, S. A., Peresypkina, E. G., Khadzhiev, S. N.
Format: Article
Language:English
Subjects:
Adsorption
Catalysts
Chemical composition
Chemistry
Chemistry and Materials Science
Dimethyl ether
Gasoline
Hydrocarbons
Industrial Chemistry/Chemical Engineering
Infrared spectroscopy
Methanol
Methyl ether
Synthesis gas
Zeolites
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Summary:Comparative data obtained by studying the synthesis of С 5+ hydrocarbons from dimethyl ether (DME) on catalysts using MFI zeolites available from different manufacturers are presented. It has been shown that MFI zeolite samples substantially differ in their acidic properties and structural, morphological, and textural characteristics. The catalysts based on different MFI zeolites also noticeable differ in the yield and chemical composition of С 5+ hydrocarbons. By switching from the stand-alone operation of a DME conversion reactor to the joint operation of two reactors for synthesis of oxygenates (DME and/or methanol) from synthesis gas and synthesis of hydrocarbons from oxygenates connected by a single circuit, high selectivity for hydrocarbons of the gasoline fraction is achieved with the catalyst based on the MFI zeolite, for which the bands characteristic of Н 3 О + acid sites are observed in diffuse reflectance IR spectra.
ISSN:0965-5441
1555-6239
DOI:10.1134/S0965544116090103